<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>支付宝测试页面</title>
</head>
<body>
    <div>
        <a href="http://localhost:8181/pay">支付</a>
    </div>
    <div>
        <form action="http://localhost:8181/refund" method="get">
            <input type="text" name="out_trade_no" />
            <input type="text" name="trade_no" />
            <button type="submit">退款</button>
        </form>

    </div>
</body>
</html>